v4.11.0

. New feature: support http_index_files at HTTP2 server
. HTTP2: allow HTTP2 client and server to set custom HTTP2 settings
. Support static compile
. CI: Remove PHP7.2/7.3 support as they are not supported by the PHP team
. Bug fixed: Fix HTTP2 client and respect max_concurrent_streams settings
. HTTP2: Update HTTP2 default max concurrent streams per connection to be 1280
. Bug fixed: Respect server side settings at HTTP2 client
. Optimize signal-driven timer code (@hauptmedia)
. Bug fixed: $server->getWorkerPid does not return the correct worker pid when being called from another worker context
. Bug fixed: init window size in http2 server
. Deprecated: redis server
. Bug fixed: close HTTP2 connection when there are errors
. Close connection when a process is stopped and it is managing http2 sessions
. Bug fixed: fix user land timer is not stopping when the server is shutting down
. Postgres client: return empty array if the result set is empty
. Postgres client: provide constant enums for $connection->resultStatus
. Postgres client: added new API $pg->reset() and $pg->status() (@RedChops)
. CI and tests: fixed many many bugs in tests and improved the CI and testing (@hauptmedia)
. Build fix for gcc < 4.9 (@dmz-uk)